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FIELD  COLUMBIAN  MUSEUM. 

PUBLICATION  74. 
ZOOLOGICAL  SERIES.  VOL.   Ill,  No.    10. 


DESCRIPTIONS 

OF 

APPARENTLY    NEW'  SPECIES 
AND    SUBSPECIES 

OF 

M  A  M  M  A  L  S 

FROM 

CALIFORNIA,  OREGON,  THE  KENAI  PENINSULA, 

ALASKA,  .AND  LOWER   CALIFORNIA, 

MEXICO. 

BY 

D.  G.  ELLIOT,   F.R.S.E., 
Curator  of  Department. 


CHICAGO,  .U.  S.  A. 

April,    1903. 


DESCRIPTIONS  OF  APPARENTLY  NEW  SPECIES  AND  SUBSPECIES 
OF  MAMMALS  FROM  CALIFORNIA,  OREGON,  THE  KENAI 
PENINSULA,  ALASKA,  AND  LOWER  CALI- 
FORNIA, MEXICO. 


BY  D.   G.   ELLIOT,   F.  R.S.E.,   ETC. 


The  forms  described  in  this  paper,  with  the  exception  of  the  mink 
from  the  Kenai  Peninsula,  Alaska,  and  the  mouse  from  St.  Catalina 
Island,  California,  were  obtained  by  Mr.  Edmund  Heller,  Collector 
for  the  Museum,  along  the  coasts  of  California  and  Oregon  in  1901, 
and  in  the  Peninsula  of  Lower  California  in  1902,  both  in  the  low 
lands  and  in  the  mountain  ranges  of  Hanson  Laguna  and  the  San 
Pedro  Martir.  A  complete  catalogue  of  the  collections  obtained  on 
these  expeditions  will  be  published  later  with  Mr.  Heller's  notes  upon 
the  various  species  procured.  In  the  troublesome  genera  Thomomys 
Microtus  and  Perognathus,  I  have  been  assisted  by  Dr.  Merriam, 
Mr.  V.  Bailey,  and  Mr.  W.  H.  Osgood  of  the  Biological  Survey, 
Washington,  who  have  kindly  compared  a  number  of  my  specimens 
with  the  types  and  examples  in  the  great  collection  in  Dr.  Merriam's 
charge,  and  to  whom  I  desire  to  express  my  thanks.  The  measure- 
ments given  in  this  paper,  except  some  of  Myotis  tnilleri  and  Putorius 
r.  melampeplns,  are  those  of  the  collector's  taken  in  the  flesh. 


ORDER   RODENTIA. 
FAM.    SCIURID.E. 

TAMIAS. 

Tamias  townsendi  littoralis.     Subsp.  nov. 
Type  locality.     Marshfield,  Oregon. 

Geogr.  distr.  Coast  region  of  Oregon  from  Rogue  River  to 
the  mouth  of  the  Columbia. 

Gen.  char.  Size  large;  no  white  or  grayish  dorsal  streaks, 
five  distinct  black  stripes  on  back,  the  intermediate  ones  slightly 
paler  than  color  of  upper  parts;  anteorbital  face  stripe  distinct; 
face  ochraceous;  under  parts  white. 

153 


154  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.   III. 

Color.  Upper  parts,  rump  and  sides  of  body  uniform,  very 
dark  ochre;  tops  of  head  and  nose  mixed  black  and  ochraceous; 
five  black  dorsal  stripes,  the  middle  one  running  from  occiput  to 
root  of  tail;  space  between  stripes  slightly  paler  than  body  color; 
face  stripes  and  center  of  nose  black;  sides  of  face  ochraceous; 
postauricular  spot  grayish  white,  conspicuous;  under  parts  white, 
plumbeous  of  under  fur  showing  through;  tail  above  dark  ochra- 
ceous at  base,  with  black  hairs  intermingled,  rest  black,  the  hairs 
tipped  with  white,  their  bases  reddish  ochre;  beneath  dark  ochre 
at  base,  rest  reddish  ochre  with  black  lateral  band  fringed  exter- 
nally with  white;  tip  black,  edged  with  white;  hands  and  feet  pale 
grayish  buff;  ears  black,  with  broad  external  band  including  tip 
grayish  white,  external  basal  edge  ochraceous. 

Measurements.  Total  length,  262;  tail  vertebrae,  115;  hind 
foot,  37;  ear,  23.  Skull:  occipito-nasal  length,  38;  Hensel,  30; 
zygomatic  width,  21;  interorbital  constriction,  8.5;  length  of 
nasals,  n;  palatal  length,  16;  length  of  upper  tooth  row,  6; 
length  of  mandible,  angle  to  alveolus  of  incisor,  16. 

This  form  of  chipmunk  is  allied  to  T.  t.  ochrogenys  Merr. ,  from 
Mendocino  and  the  coast  of  California  and  Oregon  to  the  Rogue 
River.  The  pelage  described  above  is  that  of  winter,  and  differs 
from  that  of  T.  t.  ochrogenys  in  the  absence  of  gray  dorsal  stripes, 
different  color  of  the  upper  parts,  the  presence  of  the  anteorbital 
face  stripe,  absent  in  T.  t.  ochrogenys  at  all  seasons,  and  the  absence 
of  buff  on  the  under  parts.  It  agrees  with  the  subspecies  com- 
pared in  having  the  sides  of  the  head  ochraceous.  From  T.  t. 
hindsi  it  differs  in  being  much  larger,  has  not  the  reddish  color- 
ing characteristic  of  that  form,  absence  of  pale  dorsal  stripes, 
and  the  presence  of  the  ochraceous  cheeks;  and  from  T.  to-n<n- 
sendi  in  an  entirely  different  coloring  and  no  gray  stripes.  It 
seems  to  replace  T.  t.  ochrogenys  on  the  Oregon  coast,  north  of 
Goldbeach.  All  the  specimens  were  taken  in  November  and 
December,  so  I  do  not  know  what  the  breeding  pelage  would  be, 
or  if  there  would  be  any  gray  dorsal  stripes  at  that  season.  I 
have  before  me  T.  t.  hindsi  at  all  times  of  the  year  exhibiting 
the  different  phases  of  pelage,  and  none  of  them  agree  with 
the  specimens  of  this  form.  Dr.  Merriam  intimates  that  T.  /. 
ochrogenys  is  never  white  on  the  under  parts,  when  he  says,  com- 
paring it  with  T.  toivnsendi,  that  "it  differs  in  all  pelages  by  color 
of  under  parts,  which  is  always  white  in  townsendi,"  so  I  infer  that 
these  examples  can  not  be  the  winter  pelage  of  T.  t.  ochrogenys, 
especially  as  that  form,  both  in  breeding  and  postbreeding  pelages  > 


AI-K.  1903.     NEW  SPECIES  AND  SUBSPECIES  OF  MAMMALS — ELLIOT.     155 

before  me,  has  the  gray  dorsal  stripes  conspicuous,  and  the  under 
parts  buff.  Neither  do  these  examples  exhibit  an  intergradation 
between  tounisendi  and  oc/irogenys,  or  townsendi  and  hindsi,  which 
last,  so  far  as  I  am  aware,  has  not  been  taken  beyond  the  bound- 
aries of  California.  The  present  form  varies  somewhat  in  measure- 
ments, the  extremes  of  the  nineteen  examples  before  me  being: 
total  length,  245-275;  tail  vertebrae,  100-124;  hind  foot,  36-37.5; 
.  ear,  21-24.  The  differences  are  probably  caused  mainly  by  age, 
although  in  some  instances  the  variation  in  length  of  the  tail 
determines  the  differences  in  the  total  length.  In  cranial  charac- 
ters, hindsi  has  a  smaller  skull,  with  narrower  and  more  pointed 
nasals,  narrower  palate  and  rostrum.  The  skull  of  T.  t.  littoralis 
resembles  closely  that  of  T.  /.  ochrogenys,  but  is  smaller  with 
somewhat  larger  nasals,  and  is  the  intermediate  of  that  sub: 
species  and  T.  t.  hindsi. 

FAM.   MURID.E. 
SUBFAM.    CRICETIN.E. 

ONYCHOMYS. 
Onychomys  *macrotis.     Sp.  nov. 

Type  locality.  Head  of  San  Antonio  River,  Lower  California, 
Mexico. 

Geogr.  distr.  From  San  Quentin  to  San  Antonio  River, 
Trinidad,  and  El  Alamo,  to  about  5,000  feet  elevation,  San  Pedro 
Martir  mountains,  Lower  California,  Mexico. 

Gen.  char.  Size  medium,  color  pale;  ears  and  hind  feet  long; 
tail  rather  long,  without  white  tip;  no  black  spot  on  ear. 

Color.  Above  ashy  vinaceous,  finely  lined  on  dorsal  surface 
and  top  of  head  with  blackish  brown,  causing  these  parts  to  be 
slightly  darker  than  the  rest  of  upper  surface;  sides  of  body  ashy 
vinaceous;  orbital  ring  black;  lips,  cheeks,  under  parts,  hands 
and  feet  pure  white;  tail  dusky  above,  white  beneath;  ears  pale 
grayish  brown,  outer  edge  blackish;  tuft  of  white  hairs  at  base 
of  ears. 

Measurements.  Total  length,  155;  tail  vertebrae,  55;  hind  foot, 
21 ;  ear,  20.5.  Skull:  occipito-nasal  length,  26;  Hensel,  20; 
zygomatic  breadth,  13.5;  interorbital  constriction,  4.5;  length  of 
nasals,  7.5;  palatal  arch  to  alveolus  of  incisor,  10;  greatest  width 
of  brain  case,  n. 

This  pale  form  of  Onychomys  is  remarkable  for  the  great  size 
?,  long;  oJ?,  ear. 


156  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.   III. 

of  its  ears  and  their  uniform  coloration,  there  being  no  black 
spot,  the  edges  only  being  black.  It  must  be  rare  in  the  San 
Pedro  Martir  mountains,  as  only  four  specimens  were  taken. 

PEROMYSCUS. 
Peromyscus  *perimekurus.     Sp.  nov. 

T\pe  locality.     Goldbeach,  Oregon. 

Geogr.  distr.  Coast  region  of  Oregon,  extent  of  range  not 
yet  known. 

Gen.  char.  Similar  to  P.  austerus,  but  lighter  in  general  color 
and  larger;  tail  very  long,  107-116.  Skull  with  larger  bullae, 
wider  pterygoid  fossa,  and  somewhat  narrower  rostrum. 

Color.  Back  of  head  and  dorsal  region  buff,  heavily  lined 
with  black;  fore  part  of  head,  nose,  sides  of  head  and  body, 
grayish  buff;  lateral  line  bright  buff,  more  distinct  in  some  speci- 
mens than  in  others;  lips  and  entire  under  parts  plumbeous, 
washed  with  white;  hands  and  feet  white;  tail  brown  above,  flesh 
color  beneath,  with  27  millimeters  of  the  end  blackish;  ear,  inside 
orange  at  base,  remainder  black,  outside  pale  brown  for  basal 
half,  rest  blackish  with  white  edge. 

Measurements.  Total  length,  220;  tail  vertebrae,  116;  hind 
foot,  23;  ear,  19.  Extreme  measurements  of  seven  specimens:  total 
length,  206-220;  tail  vertebrae,  107-116;  hind  foot,  22-24;  ear, 
18.5-22.  Skull:  occipito-nasal  length,  25.5;  Hensel,  19:  zygo- 
matic  width,  12;  interorbital  constriction,  4;  palatal  arch  to 
alveolus  of  incisor,  9.5;  width  of  brain  case,  11.5;  length  of 
nasals,  9.5;  width  of  rostrum,  3;  length  of  upper  tooth  row,  3; 
length  of  mandible,  angle  to  alveolus  of  incisor,  11.5:  height  at 
condyle,  4.5;  at  coronoid  process,  6. 

In  the  series  of  Peromyscus  obtained  by  Mr.  Heller  of  the 
austerus  style  there  seems  to  be  two  forms,  the  one  here  described, 
characterized  by  greater  size  and  a  very  much  longer  tail,  with  a 
general  lighter  colored  pelage,  and  the  typical  style.  Mr.  Heller 
noticed  the  difference  and  in  his  notes  stated  that  the  larger  form 
was  the  rarer  of  the  two,  which  seems  to  be  the  fact,  for  out  of 
fifty-eight  specimens  I  can  only  find  seven  that  can  be  assigned 
to  the  new  form,  the  rest  being  P.  austerus,  all,  however,  being 
larger  than  Baird's  type.  The  exceedingly  long  tail  of  the 
present  form  makes  it  at  once  conspicuous  among  specimens  of 
austerus,  the  tail  of  which  appears  rarely  to  exceed  100  millimeters 
in  length. 
*-*«p2// ?/*?/?,  very  long;  ovpd,  a  tail. 


AI-R.  1903.     NEW  SPECIES  AND  SUBSPECIES  OF  MAMMALS—ELLIOT.     157 

Peromyscus  *hemionotis.     Sp.  nov. 

Type  locality,  Rosarito  Divide,  5,000  feet  elevation,  San 
Pedro  Martir  mountains,  Lower  California,  Mexico. 

Geogr.  distr.      Only  known  from  type  locality. 

Gen.  char.  Similar  in  color  to  P.  e.  stephensi,  but  larger,  with 
enormous  ears  and  very  long  tail. 

Color.  Nose  and  tufts  in  front  of  ears  dark  gray;  top  of  head  and 
upper  parts  cream  buff  finely  lined  with  black;  bright  ochraceous 
lateral  line  from  lips  to  root  of  tail;  under  parts  pure  white,  base 
of  hairs  plumbeous,  showing  through;  hands  and  feet  white;  tail 
above  brownish  black;  beneath  white;  ears  dark  brown. 

Measurements.  Total  length,  222;  tail  vertebrae,  126;  hind 
foot,  22.5;  ear,  25.5.  Skull:  occipito-nasal  length,  27;  Hensel, 
20.3;  zygomatic  width,  13;  interorbital  constriction,  4.5;  breadth 
of  brain  case,  13;  palatal  arch  to  alveoli  of  incisors,  10.5;  length 
of  nasals,  10;  greatest  breadth  of  rostrum,  4;  length  of  upper  tooth 
row,  4;  length  of  mandible,  angle  to  alveolus  of  incisor,  u. 

Only  two  specimens  of  this  mouse  were  procured,  character- 
ized by  its  enormous  ears  and  very  long  tail.  Mr.  Heller  writes 
that  it  seemed  to  be  very  rare,  and  he  was  unable  to  obtain  more 
examples.  It  has  a  general  grayish  buff  appearance,  similar  to 
P.  e.  stephensi,  but  the  coloring  is  not  so  bright.  It  is  a  much 
larger  animal,  as  the  measurements  show. 

Peromyscus  tgaurus. 

Type  locality.  San  Antonio,  San  Pedro  Martir  mountains, 
Lower  California,  Mexico. 

Gen.  char.  Size  moderately  large,  tail  very  long,  colors  pale, 
skull  with  broad  brain  case,  nasals  long,  interorbital  space 
broad. 

Color.  Above  ochraceous  buff,  finely  lined  with  black,  deepest 
*  and  brightest  on  lower  back  and  rump,  becoming  grayish  cream 
buff  on  upper  back  and  top  of  head  and. nose,  lined  with  black; 
cheeks,  sides,  thighs  and  upper  parts  of  arms  bright  ochraceous 
buff;  upper  lip,  chin,  inner  side  of  arms  and  legs  and  entire 
under  parts  pure  white,  the  plumbeous  of  under  fur  showing 
through;  hands  and  feet  white;  tail  above  dark  wood  brown, 
beneath  cream  color;  ears  blackish  brown. 

Measurements.  Total  length,  222-;  tail  vertebrae,  122;  hind 
foot,  22;  ear,  20.  Skull:  occipito-nasal  length,  27;  Hensel,  21: 

*///uzot> o?,  a  mule;  ovS,  'card?,  an  ear. 
+yvivpo6,  frisky. 


158  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.   III. 

zygomatic  width,  14;  interorbital  constriction,  4;  length  of 
nasals,  9;  palatal  length  from  palatal  arch  to  alveolus  of  incisor, 
n;  postpalatal  length,  9;  greatest  breadth  of  rostrum,  4;  length 
of  mandible,  angle  to  alveolus  of  incisor,  n;  height  at  coronoid 
process,  7. 

This  species  belongs  to  the  fraterculus  group  with  long  tails, 
but  is  very  differently  colored.  The  tints  are  mostly  pale  except 
on  rump  and  sides,  which  have  brighter  hues.  It  was  only  taken 
by  Mr.  Heller  in  one  locality,  San  Antonio,  on  the  western  slope 
of  the  San  Pedro  Martir  mountains,  and  seems  to  have  been  rare, 
as  only  six  specimens  were  secured,  three  of  which  had  the  tails 
more  or  less  shortened.  Its  distinctive  coloration  renders  com- 
parison with  other  members  of  the  group,  save  the  next  species, 
unnecessary. 

Peromyscus  *homochroia.     Sp.  nov. 

Type  locality.     San  Quentin,  Lower  California,  Mexico. 

Gen.  char.  Similar  in  color  to  P.  gait  r  us,  but  smaller,  tail 
shorter  and  black  above  instead  of  wood  brown;  ears  compara- 
tively longer.  Skull  is  shorter  in  occipito-nasal  length;  brain 
case  narrower,  nasals  shorter  and  more  pointed;  interorbital 
constriction  greater;  pterygoid  fossa  and  palate  narrower. 

Color.  Above  similar  to  P.  gaurus;  beneath  white  with  buff 
patch  on  chest,  between  arms;  sides  ochraceous;  hands  and  feet 
white;  tail  above  black,  with  apical  third  black  all  round,  beneath 
for  remaining  part  whitish.  In  some  specimens  the  tail  is  black 
all  round,  in  others  the  whitish  hue  beneath  goes  to  the  tip. 
Ears  brownish  black. 

Measurements.  Total  length,  185;  tail  vertebrae,  100;  hind 
foot,  20;  ear,  21.5.  Skull:  occipito-nasal  length,  24.2;  Hensel, 
18;  zygomatic  width,  8;  interorbital  constriction,  3.8;  width  of 
brain  case,  6.6;  length  of  nasals,  6.5;  palatal  length,  9;  post- 
palatal  length,  8.2;  greatest  breadth  of  rostrum,  3;  length  of 
mandible,  angle  to  alveolus  of  incisor,  10;  height  at  coronoid 
process,  5. 

This  in  some  respects  is  a  diminutive  of  the  previous  species, 
but  easily  recognizable  by  its  shorter  and  darker  colored  tail, 
and  the  more  or  less  buff  on  under  parts.  The  average  length 
of  tail  is  shorter  than  the  measurement  given  of  the  type,  prob- 
ably 87  or  90  being  the  correct  number  of  millimeters.  This 
form  is  numerous  at  San  Quentin  and  may  be  regarded  as  a 

,  similarity  of  color. 


APR.  1903.     NEW  SPECIES  AND  SUBSPECIES  OF  MAMMALS — ELLIOT.    159 

mouse  of  the  plains,  its  longer-tailed  relative  being  a  mountain 
species.  The  buff  spot  on  the  chest,  mentioned  in  the  descrip- 
tion, is  absent  in  some  specimens,  and  others  again  have  the 
white  under  parts  tinged  with  buff.  The  brightly  colored  rump 
renders  this  form  rather  conspicuous.  It  bears  also  some  resem- 
blance to  P.  thurberi,  but  its  long  tail,  large  ears  and  brighter 
coloring  would  serve  to  distinguish  it. 

Peromyscus  *oresterus.     Sp.  nov. 

T\pe  locality.  Vallecitos,  San  Pedro  Martir  mountains,  Lower 
California,  Mexico,  9,000  feet  elevation. 

Gen.  char.  Color  pale;  tail  medium  length.  Skull  with  brain 
case  broad,  rostrum  heavy,  nasals  broad. 

Color.  Upper  parts  pinkish  buff  lined  with  black  on  top  of 
head  and  dorsal  region,  making  these  darker  than  the  rest;  line 
from  nose  to  below  the  eye,  shoulders  and  upper  part  of  sides  of 
body  pinkish  buff;  end  of  nose,  lips,  cheeks,  lower  part  of  sides 
of  body  and  entire  under  parts  pure  white;  base  of  fur  plumbeous; 
tail  above  dusky;  sides  and  beneath  creamy  white;  hands  and  feet 
white;  ears  brownish  black,  with  tufts  of  creamy  buff  hairs  cover- 
ing basal  half. 

Measurements.  Total  length,  201;  tail  vertebrae,  96;  hind  foot, 
21:  ear,  20.5.  Skull:  occipito-nasal  length,  26;  Hensel,  20; 
zygomatic  width,  12;  interorbital  constriction,  4;  length  of  nasals, 
9;  breadth  of  rostrum,  4;  palatal  length,  10;  postpalatal  length, 
7;  width  of  brain  case,  n. 

This  is  a  pale  species  belonging  to  the  thurberi  group,  but 
apparently  very  distinct  from  all  of  the  described  forms.  Only 
fifteen  specimens  were  obtained,  seven  at  Vallecitos,  the  type 
locality,  and  two  at  Agua  de  las  Fresas,  a  short  distance  to  the 
north,  both  localities  being  in  the  very  midst  of  the  San  Pedro 
Martir  mountains,  and  six  at  Hanson  Lagoon,  in  the  Hanson 
Laguna  range.  There  is  a  slight  variation  in  the  measurements 
between  the  examples,  the  tail  of  the  type  being  longer  than  the 
others.  The  extreme  dimensions  of  the  fifteen  examples  are: 
total  length,  160-201;  tail  vertebrae,  71-96;  hind  foot,  20.5-21; 
ear,  19-21.5.  The  difference  in  total  length  is  mainly  in  the 
length  of  tail,  which  member  often  varies  considerably  in  species 
of  this  genus.  One  of  these  specimens  has  a  narrow  line  from 
the  chest  to  the  anal  region  in  which  the  hairs  are  white  to  the 
roots,  but  this  is  not  perceptible  in  the  one  selected  for  the  type, 

*6p£<SrtpoS,  dwelling  in  the  mountains. 


160  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.  III. 

all  the  hairs  being  plumbeous  at  the  roots.  This  mouse  is  evi- 
dently a  dweller  of  high  elevation,  Vallecitos  being  9,000  feet 
above  the  sea,  Agua  de  las  Fresas  6,000  feet,  and  Hanson 
Lagoon  5,000  feet,  and  is  easily  recognized  by  its  pale  color  both 
on  body  and  tail. 

Peromyscus  catalinse.     Sp.  nov. 

Type  locality.     St.  Catalina  Island,  off  coast  of  California. 

Gen.  char.  Size  of  P.  t.  gambeli,  but  with  much  longer  tail, 
ears  and  hind  feet. 

Color.  Upper  parts  grayish  buff  heavily  lined  with  black, 
lower  back  darkest;  rump  grayish  buff;  cheeks,  nose  and 
sides  buff;  upper  lip,  lower  side  of  face,  entire  under  parts, 
hands  and  feet,  pure  white;  tail  above  dusky,  beneath  white;  ears 
brownish  black. 

Measurements.  Total  length,  176;  tail  vertebrae,  92;  hind  foot, 
23;  ear  from  notch,  18.  Skull:  occipito-nasal  length,  25;  Hen- 
sel,  19;  zygomatic  width,  13;  interorbital  constriction,  4;  mastoid 
width,  10.2;  length  of  nasals,  8;  width  of  brain  case  above  audit- 
ory meatus,  10;  length  of  upper  tooth  row  on  alveolus  border,  3. 

This  form  of  Peromyscus  is  a  near  relative  of  P.  t.  gambeli, 
but  its  insular  habitat  seems  to  have  caused  a  lengthening  of 
limbs,  tail  and  ears.  Doubtless  very  old  individuals  would 
exhibit  a  brighter  pelage,  as  is  witnessed  in  old  adults  of  P.  t. 
gambeli.  Indeed,  one  example  of  the  small  series  before  me  does 
show  brighter  color  than  the  others.  The  tendency  to  concen- 
trate the'  black  on  the  lower  back,  as  seen  in  the  type,  is  not 
exhibited  in  all  the  specimens,  some  being  a  more  uniform 
grayish  buff  lined  with  black  on  the  upper  parts. 

Thirteen  examples  were  received  from  Mr.  J.  Rowley,  col- 
lected by  him  in  February  on  St.  Catalina  Island. 

SUBFAM.    NEOTOMIN^E.. 

GENUS   NEOTOMA, 
Neotoma  fuscus  apicalis.     Subsp.  nov. 

Type  locality.     Gardiner,  Coos  County,  Oregon. 
Gen.  char.     Size   large,    tail   bushy,    tip  white.      Skull   long, 
narrow;  orbital  constriction  considerable;  rostrum  long. 

Color.  Top  of  head  and  upper  parts  mixed  black  and  yellow- 
ish, the  former  predominating;  sides  of  head  dark  gray  and 
yellowish;  sides  of  body  yellowish  buff  slightly  mixed  with  black; 


APR.  1903.     NEW  SPECIES  AND  SUBSPECIES  OF  MAMMALS — ELLIOT.     161 

chin  and  patch  on  upper  part  of  throat  pure  white,  rest  of  throat 
plumbeous  washed  with  white;  inside  of  fore  legs  and  narrow  line 
across  breast  below  the  plumbeous  on  throat  deep  ochraceous; 
below  this  line  on  breast  is  a  pure  white  patch,  and  another  on 
anal  region;  center  of  abdomen  buff,  rest  of  under  parts  plum- 
beous washed  with  white;  outer  side  of  hind  legs  black  to  ankles, 
the  black  extending  onto  the  back  of  ankles;  feet  and  hands  pure 
white;  tail  above  blackish  with  a  white  *tip  43  millimeters  in 
length,  beneath  ochraceous  at  base,  this  color  extending  in  a  thin 
line  on  the  center  of  the  tail  for  half  its  length;  rest  of  under 
surface  pure  white. 

Measurements.  Total  length,  423;  tail  vertebrae,  202;  hind 
foot,  47;  ear,  32.  Skull:  occipito-nasal  length,  51;  Hensel,  43; 
zygomatic  width,  27;  interorbital  constriction,  5;  length  of  nasals, 
20;  palatal  arch  to  the  alveolus  of  incisor,  24;  length  of  upper 
tooth  row,  9.5;  length  of  mandible,  angle  to  alveolus  of  incisor, 
25;  height  at  condyle,  10.5;  at  coronoid  process,  15. 

This  wood  rat,  while  evidently  a  subspecies  of  N.  fusca,  has 
also  some  resemblance  to  N.  c.  occidentalis,  in  the  pure  white  of 
a  part  of  the  under  surface  of  the  tail,  but  the  upper  surface, 
while  brighter  than  that  of  N.  fusca,  has  none  of  the  rufous  tinge 
seen  in  the  tail  of  N.  c.  occidentalis.  The  pure  white  tip,  how- 
ever, makes  this  form  conspicuously  distinct  from  all  the  wood 
rats  know-n  to  me.  A  series  of  this  subspecies  was  secured  at 
Gardiner. 

GENUS   MICROTUS. 
Microtus  californicus  *huperuthrus.     Sp.  nov. 

Type  locality.     San  Quentin,  Lower  California. 

Geogr.  distr.  Sea  coast  in  the  vicinity  of  San  Quentin  up  to 
8,000  feet  elevation,  in  the  San  Pedro  Martir  mountains,  Lower 
California,  Mexico. 

Gen.  char.  Larger  and  usually  more  reddish  in  color  than 
M.  californicus,  with  hind  foot  longer  and  tail  about  equal. 

Color.  Upper  parts  dark  tawny,  or  tawny  ochraceous  slightly 
lined  with  black;  sides  paler,  more  buffy;  entire  under  parts 
plumbeous,  faintly  washed  with  white;  hands  and  feet  gray;  tail 
above  dusky,  beneath  grayish  white. 

Measurements.  Total  length,  208;  tail  vertebrae,  54;  hind  foot, 
24.5;  ear,  18.  Skull:  occipito-nasal  length,  33;  Hensel,  29; 
zygomatic  width,  19;  interorbital  constriction,  3;  length  of  nasals 

*vir£pvrJpo?,  reddish. 


162  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.   III. 

81;  palatal  length,  17;  mastoid  breadth,  14;  width  of  brain  case 
above  auditory  meatus,  10.5;  length  of  upper  tooth  row  at 
alveolar  border,  8. 

This  form  of  Microtus  is  allied  to  M.  californicus,  but  is  con- 
siderably larger  and  usually  has  a  reddish  tinge  to  the  pelage  not 
observable  in  the  other,  and  is  not  so  heavily  lined  with  black. 
Some  specimens  are  quite  reddish,  being  a  dark  tawny  on  all  the 
upper  parts. 

It  was  not  found  on  the  coast  north  of  San  Quentin,  and 
ranges  in  the  mountains  east  of  that  place  to  La  Grulla  and 
Agua  de  las  Fresas,  about  8,000  feet  elevation.  North  of  these 
places  it  was  not  seen. 

In  the  series  of  this  form  procured  by  Mr.  Heller,  slight 
variations  in  color  are  observable  among  the  examples,  caused 
probably  by  age,  and  as  they  were  taken  from  July  to  September, 
possibly  also  by  the  difference  of  season,  although  I  should  judge 
that  this  was  not  a  very  potent  factor,  as  some  specimens  taken 
in  July  and  September  more  nearly  agree  in  color  than  some 
procured  during  the  interval.  The  tails  are  not  all  colored  like 
that  of  the  type,  some  being  dusky  above  and  cream  color 
beneath,  and  some  specimens  are  paler  and  less  red  than  others, 
and  the  form  is  not  nearly  so  dark  as  M.  californicus,  of  which  it 
is  a  subspecies.  It  is  a  large  vole  and  belongs  to  the  group 
containing  constrictus  vallicola,  scirpcnsis  and  the  species  men- 
tioned above,  and  is  even  larger  than  M.  vallicola,  which  up  to 
this  time  exceeded  in  size  any  of  the  known  species. 


GENUS    FIBER. 
Fiber  occipitalis.     Sp.  nov. 

Type  locality.      Florence,  Oregon. 

Gen.  char.  Size  largest  of  the  genus.  Occipital  crest  bowed 
inward  at  interparietal,  nearly  forming  a  half  circle;  interorbital 
constriction  greatly  pronounced;  frontal  crest  marked;  post- 
orbital  processes  pointing  downward,  acute;  brain  case  narrow 
posteriorly;  interparietal  nearly  as  long  as  broad;  parietals  pointed 
anteriorly,  very  narrow  posteriorly;  nasals  broad  anteriorly, 
sharply  contracting  posteriorly;  face  of  occipital  broader  in  pro- 
portion to  its  height  than  that  of  F.  zibethicus;  coronoid  process 
of  mandible  narrow,  acute;  condyle  broad  and  heavy;  molars 
smaller  than  those  of  F.  zibethicus;  incisors  short,  heavy. 

Color.     Upper  parts  reddish  brown,   lined  with  black  hairs, 


APR.  1903.     NEW  SPECIES  AND  SUBSPECIES  OF  MAMMALS — ELLIOT.    163. 

these  very  numerous  on  dorsal  region,  causing  this  to  be  much 
darker  than  other  parts;  top  of  head,  nose  and  around  the  eyes 
blackish,  under  fur  gray;  lips  white;  throat,  upper  parts  of  chest 
and  inner  side  of  arms  dark  gray;  inner  side  of  thighs  and  anal 
region  white:  rest  of  under  parts  rufous,  under  fur  plumbeous; 
hands  and  feet  blackish  brown;  tail  black. 


FIBER  OCCIPITALIS. 

Nat.  size. 


164  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.   III. 

Measurements.  Total  length,  597;  tail,  295;  hind  foot,  85; 
ear,  21.  Skull:  occipito-nasal  length,  67;  Hensel,  60;  zygomatic 
width,  43;  width  of  brain  case  posteriorly,  18;  mastoid  breadth, 
26;  interorbital  constriction,  6.5;  across  postorbital  processes, 
23;  interorbital  width  anteriorly,  11.5;  length  of  nasals,  27;  width 
of  nasals  posteriorly,  2.5;  width  of  nasals  anteriorly,  8;  greatest 
width  of  rostrum,  n;  palatal  arch  to  incisive  foramina,  15;  post- 
palatal  length,  22;  length  of  upper  tooth  row,  alveolar  border, 
15;  total  length  of  incisors  from  alveolus,  15;  length  of  mandi- 
ble, angle  to  upper  edge  of  alveolus  of  incisor,  45;  height  at 
condyle,  21,  at  coronoid  process,  23;  length  of  lower  tooth  row, 
alveolus  border,  15. 

This  is  apparently  the  largest  species  of  muskrat  known  at 
this  time.  It  is  remarkable  for  the  peculiar  formation  of  the 
occipital  region  of  the  skull,  the  superior  outline  being  greatfy 
curved  in  the  center,  making  a  deep  indentation  at  the  inter- 
parietal  and  of  the  same  width  as  that  bone;  the  brain  case  is 
much  contracted  posteriorly,  and  the  parietal  is  of  a  quite  differ- 
ent shape  from  that  seen  in  F.  zibethicus.  The  nasals,  while 
about  the  same  length  as  those  of  the  species  just  named,  are 
broader  at  their  greatest  width  and  are  rounded  at  both  ends;  the 
molars  are  smaller,  and  the  mandible  is  deeper  through  than  in 
F.  zibethicus.  In  color  there  is  not  much  difference  between  the 
present  species  and  the  common  muskrat,  but  F.  occipitalis  is 
somewhat  darker  above  and  redder  beneath.  ¥*omF.spatulatus 
this  form  differs  in  many  ways.  It  is  much  larger,  has  very 
differently  shaped  nasals;  the  parietal  much  wider  and  longer, 
the  interparietal  higher  and  rounded  anteriorly,  and  the  occipital 
outline  deeply  bowed  in  center,  which  feature  appears  entirely 
absent  in  type  of  F.  spatulatus.* 

GENUS   RHITHRODONTOMYS. 
Rhithrodontomys  peninsulae.     Sp.  nov. 

Type  locality.     San  Quentin,  Lower  California,  Mexico. 
Geogr.  distr.      Only  known  from  type  locality. 
Gen.  char.     Tail   less  than  half  the   total   length;  size  large; 
pelage  more  red  than  that  of  R.  longicaudus,  with  longer  tail  and 
hind   foot,  and  much   larger  ears.     Skull   larger,    nasals   longer, 
brain   case    broader;    interorbital    space    of    nearly    equal    width 
throughout,  sides  nearly  parallel. 

*  See  PI.  VI,  Fig.  4,  N.  Am.  Faun.,  No.  19,  1900. 


APR.  1903.     NEW  SPECIES  AND  SUBSPECIES  OF  MAMMALS — ELLIOT.     165 

Color.  Above  and  on  thighs  reddish  brown,  deepest  on  thighs 
and  rump,  and  darkest  on  dorsal  region,  which  part  is  mixed 
with  black;  sides  of  head  and  body  light  reddish  brown,  the 
plumbeous  under  fur  showing  through  at  intervals;  top  of  head 
like  dorsal  region,  under  parts  white  or  grayish  white,  caused  by 
the  plumbeous  under  fur  showing;  a  dark  ochraceous  spot  on 
sides  of  chest,  and  a  paler  one  on  middle  of  chest  between  the 
arms;  tail  dusky  brown  above,  white  beneath;  hands  and  feet 
white;  ears  dark  brown. 

Measurements.  Total  length,  170;  tail  vertebrae,  89;  hind 
foot,  17.5;  ear,  16.  Skull:  occipito-nasal  length,  27;  Hensel,  20; 
zygomatic  breadth,  10;  least  interorbital  breadth,  3;  palatal  arch 
to  alveolus  of  incisor,  8.5;  length  of  nasals,  13.5. 

This  harvest  mouse  differs  from  all  others  in  Middle  America 
in  the  relative  length  of  the  tail,  which  is  less  than  half  the  total 
length.  In  its  reddish  hue  it  is  easily  recognizable  from  R.  longi- 
caudus  as  well  as  being  larger  in  all  its  measurements.  Mr. 
Heller  found  the  species  only  about  San  Quentin.  He  says  it 
was  common  near  the  coast  in  damp  meadows,  but  disappears  a 
few  miles  inland.  This  species  -is  apparently  separated  from  R. 
longicaudus  by  R.  I.  pallidus,  which  was  taken  by  Mr.  Heller  near 
the  Salado  River  at  Trinidad  and  Las  Eucinas. 

FAM.    GEOMYID.E. 

GENUS    THOMOMYS. 
Thomomys  helleri.     Sp.  nov. 

Type  locality.  Goldbeach,  mouth  of  Rogue  River,  Curry 
County,  Oregon. 

Gen.  char.  Size  medium,  nearest  possibly  to  T.  douglasi,  but 
color  different  and  tail  and  hind  foot  longer.  Skull  short,  with 
brain  case  broad,  zygomata  widely  spread;  molars  small;  ros- 
trum broad. 

Color.  Top  of  head  and  upper  parts  reddish  brown,  base  of 
fur  black;  spot  behind  ears,  line  beneath  eyes,  nose,  lips  and 
margins  of  pouches  black;  cheeks  buff;  sides  buff,  black  of  under 
fur  showing  through;  throat  and  under  parts  plumbeous  washed 
with  buff;  feet  yellowish  white;  tail  above"  dark  Kgray,  beneath 
white. 

Measurements.  Total  length,  209;  tail  vertebrae,  67;  hind 
foot,  28;  ear,  8.  Skull:  occipito-nasal  length,  36;  Hensel,  28; 


166  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.  III. 

zygomatic  width,  19;  interorbital  constriction,  6;  greatest  width 
of  brain  case,  14;  mastoid  breadth,  13.5;  length  of  nasals,  n; 
width  of  rostrum,  6;  palatal  length  to  anterior  edge  of  tooth'row 
from  palatal  arch,  5;  length  of  mandible,  angle  to  alveolus  of 
incisor,  19;  height  at  condyle,  7;  at  coronoid  process,  n;  length 
of  upper  tooth  row  at  alveolar  border,  7. 

This  gopher,  while  its  nearest  relative  would  seem  to  be  T. 
douglasi,  is  yet  apparently  distinct  from  all  the  forms  that  have 
received  a  name  up  to  this  time.  Its  geographical  position  is 
peculiar,  and  of  this  Mr.  Heller  in  his  notes  writes  as  follows: 
"  It  is  isolated  from  T.  douglasi.  On  the  south  its  range  prob- 
ably connects  with  the  Crescent  City  form  (7!  laticeps),  which  is 
very  different;  on  the  east  it  may  connect  with  T.  leucodon,  and 
on  the  north  the  genus  is  apparently  lacking  until  the  Umpqua 
is  reached."  It  therefore  stands  alone,  surrounded  by  very  differ- 
ent forms  from  which  it  is  easily  distinguished.  I  have  much 
pleasure  in  bestowing  Mr.  Heller's  name  upon  this  and  the  fol- 
lowing species,  in  recognition  of  his  most  capable  services  to  this 
Institution,  for  which  he  is  an  official  collector. 


FAM.  HETEROMYID.E. 

SUBFAM.  HETEROMYIN.E. 

GENUS  PEROGNATHUS. 

A.       CHJETODIPUS. 

Perognathus  helleri.     Sp.  nov. 

Type  locality.      San  Quentin,  Lower  California,  Mexico. 

Geogr.  distr.     Type  locality  only. 

Gen.  char.  Size  similar  to  P.  p.  arenarius ;  color  entirely 
different,  lateral  line  conspicuous.  Skull  with  shorter  nasals, 
broader  rostrum,  wider  interorbital  space,  brain  case  broader, 
mastoids  less  prominent,  and  bullae  smaller  and  more  pointed 
anteriorly. 

Color.     Above  mixed  black  and  dark  buff,  giving  a  dark  yel- 
lowish brown  appearance  to  the  upper  parts,  very  different  froi 
the  pale  buffy  drab  oiP.  p.  arenarius.     Distinct  bright  buff  later* 
line  from  nose  to  rump;  under  parts  pure  white;  tail  above  darl* 
brown,  almost  dusky;  beneath  pure  white,  pencil  like  upper  pai 
dusky;  hands  and  feet  gray,   ears  dark  brown. 


APR.  1903.     NEW  SPKCIES  AND  SUBSPECIES  OF  MAMMALS — ELLIOT.     167 

Measurements.  Total  length,  159;  tail  vertebrae,  83;  hind  foot, 
20.5;  ear,  8.  Extreme  range  of  fifteen  specimens:  total  length, 
145-166;  tail  vertebrae,  76-96;  hind  foot,  19.5-22;  ear,  6-8. 
Skull:  occipito-nasal  length,  23;  Hensel,  14;  zygomatic  breadth, 
11.5;  interorbital  constriction,  6;  mastoid  breadth,  11.5;  great- 
est width  of  brain  case,  10.5;  palatal  arch  to  alveoli  of  incisors, 
8.5;  length  of  nasals,  7.5;  width  of  rostrum,  4;  length  of  upper 
tooth  row,  3. 

The  form  nearest  to  P.  helleri  is  probably  the  one  with  which  I 
have  compared  it,  P.  p.  arenarius,  so  supposed  from  San  Felipe, 
here  reduced  to  subspecific  rank  because  the  series  in  this  col- 
lection from  Lower  California  shows  that  P.  p.  arenarius  and 
P.  p.  angustirostris  from  the  same  locality,  San  Felipe,  run  into 
one  another,  there  being  intermediate  specimens.  The  present 
species  and  the  San  Felipe  specimens  are  totally  different  in  color 
and  are  separated  from  each  other  by  the  San  Pedro  Martir 
mountains  10,000  feet  high,  as  well  as  the  two  coast  ranges,  and 
Mr.  Heller  obtained  nothing  resembling  either  in  the  intervening 
country.  P.  p.  arenarius  was  only  represented,  up  to  this  time, 
so  far  as  I  know,  by  a  single  specimen,  taken  in  the  vicinity  of 
Comondu,  seven  degrees  south  of  San  Felipe,  on  the  eastern  side 
of  the  Peninsula,  and  over  four  degrees  south  of  San  Quentin, 
which  is  on  the  west  coast.  Mr.  Heller  says  the  present  species 
was  one  of  the  commonest  mammals  at  San  Quentin. 

'erognathus  baileyi  *rudinoris.     Subsp.  nov. 

Type  locality.     San  Quentin,  Lower  California,  Mexico. 

Geogr.  distr.  West  coast  of  Lower  California,  west  of  San 
Pedro  Martir  mountains,  in  the  vicinity  of  San  Quentin. 

Gen.  char.  Similar  to  P.  baileyi  but  darker,  with  very  slender 
nasals,  mastoids  larger,  upper  incisors  more  slender. 

Color.  Upper  parts  and  sides  pale  buff  finely  lined  with  black, 
darkest  on  head;  sides  of  nose,  cheeks  and  line  above  eyes  pale 
yellowish  buff  lined  with  black;  ochraceous  lateral  line  from  lips 
to  thighs;  under  parts  pure  white;  tail  above  and  pencil  dark 
brown,  beneath  yellowish  white;  hands  and  feet  grayish  white. 

Measurements.  Type:  total  length,  232;  tail  vertebrae,  128; 
hind  foot,  27;  ear,  11.5.  Extremes  of  nine  examples:  total 
length,  180-232;  tail  vertebrae,  101-128;  hind  foot,  23.5-27;  ear, 
9.5-11.5.  Skull:  occipito-nasal  length,  31;  Hensel,  22;  zygomatic 

*pvdiyo?,  slender;  pi?,  the  nose. 


168  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,   VOL.   III. 

width,  16;  interorbital  constriction,  6.5;  width. of  interparietal, 
6.5;  length  of  nasals,  10;  anterior  width,  3;  posterior  width,  1.5: 
greatest  breadth  of  rostrum,  4;  palatal  arch  to  alveoli  of  incisors,. 
12;  greatest  width  of  basioccipital  between  bullae,  5;  mastoid 
breadth,  15;  length  of  upper  tooth  row,  4. 

This  subspecies  while  darker  than  typical  P.  baileyi  is  remark- 
able for  its  very  slender  nasals,  which  cause  it  to  differ  from  any 
other  known  form.  It  appears  to  be  a  coast  race,  for,  although 
the  mountain  ranges  of  San  Pedro  Martir  and  Hanson  Laguna 
were  thoroughly  explored  by  Mr.  Heller  no  specimen  of  this 
race  was  found  among  them.  It  was  not  uncommon  at  San 
Quentin. 

Perognathus  femoralis  *mesopolius.     S.ubsp.  nov. 

Type  locality.  Pefion,  San  Pedro  Martir  mountains,  Lower 
California,  Mexico,  5,000  feet  elevation. 

Geogr.  distr.  San  Pedro  Martir  mountains,  Lower  California, 
Mexico. 

Gen.  char.  Size  large,  ear  large,  hind  foot  and  tail  long, 
similar  to  femoralis  but  grayer,  lacking  the  bistre  color  so  char- 
acteristic of  that  species.  Skull  with  greater  interorbital  con- 
striction and  somewhat  less  mastoid  breadth. 

Color.  Above  pale  gray  and  light  buff  lined  with  black;  nose 
and  side  of  face  pale  buff  lined  sparingly  with  black;  sides  grayer 
than  upper  parts;  lateral  line  light  buff;  under  parts,  hands  and 
feet  pure  white;  tail  and  pencil  dusky  above,  white  beneath;  ears 
light  brown. 

Measurements.  Total  length,  232;  tail  vertebrae,  136;  hind 
foot,  27;  ear,  14.  Skull:  occipito-nasal  length,  27;  Hensel,  18; 
zygomatic  width,  13;  mastoid  breadth,  13;  interorbital  constric- 
tion, 6;  palatal  arch  to  alveolus  of  incisor,  10;  length  of  nasals, 
10;  posterior  width  of  nasals,  2;  anterior  width  of  nasals,  3; 
greatest  width  of  rostrum,  5. 

This  form  while  related  to  P.  femoralis  is  easily  distinguishec 
from  it  by  the  general  gray  color  of  the  pelage  and  the  absence 
of  bistre.  It  appears  to  be  restricted  to  the  San  Pedro  Martii 
range,  which  is  separated  from  the  Hanson  Laguna  mountains 
on  the  north  by  a  stretch  of  about  fifty  miles  of  broken  hills  anc 
me  ;as,  and  a  strip  of  desert,  the  elevation  of  this  tract  ranging 
from  3,000  to  6,000  feet.  In  the  Hanson  Laguna  mountains 
P.  femoralis  was  taken. 

*//e(Jo7roA.zo?,  half  gray. 


APR.  1903.      NEW  SPECIES  AND  SUBSPECIES  OF  MAMMALS — ELLIOT.     169 

Perognathus  *.knekus.     Sp.  nov. 

Type  locality.  Rosarito,  San  Pedro  Martir  mountains,  Lower 
California,  Mexico. 

Gen.  char.  Size  very  large;  color  beneath  deep  cream  buff. 
Skull  large  with  very  long  slender  nasals  broadening  at  tip. 

Color.  Upper  parts  ochraceous  buff  lined  with  black;  top  of 
nose  and  whiskers  blackish;  spot  in  front  of  eye  and  broad  lateral 
band  from  lip  to  posterior  part  of  thigh  ochraceous  buff;  sides 
.  above  lateral  line  grayish  buff;  a  pure  white  spot,  the  hairs  white 
to  the  roots,  on  chest  between  arms  and  extending  in  a  narrow 
line  towards  abdomen;  rest  of  under  parts,  arms,  legs,  hands  and 
feet  dark  creamy  buff;  tail  hairy,  above  blackish,  beneath  cream 
buff;  ears  dark  brown. 

Measurements.  Total  length,  228;  tail  vertebrae,  126;  hind 
foot,  28;  ear,  9.5.  Skull:  occipito-nasal  length,  32;  Hensel,  22; 
zygomatic  width,  16.5;  greatest  mastoid  breadth,  16;  greatest 
width  of  interparietal,  8;  interorbital  constriction,  7:  median 
length  of  nasals,  13;  lateral  length  of  nasals,  14;  posterior 
width  of  nasals,  2;  anterior  width  of  nasals,  3:  greatest  width  of 
rostrum,  5;  palatal  length,  13;  length  of  tooth  row,  alveolar 
border,  4;  length  of  mandible,  tip  of  angle  to  alveolus  of 
incisor,  14.2. 

I  hesitated  for  a  time  to  describe  this  pocket  mouse,  thinking 
that  perhaps  its  very  unusual  color  might  be  attributed  to  the  soil; 
but  on  examination  the  hairs  of  the  under  parts  were  found  to  be 
of  a  uniform  hue  to  the  roots,  and  in  the  midst  of  the  buff  was 
the  conspicuous  white  spot,  the  hairs  of  which  were  also  white 
to  the  roots.  If  the  under  parts  were  stained  by  the  soil  it  is 
difficult  to  understand  why  the  white  spot  was  left  when  all  around 
it  was  a  uniform  buff  or  cream  buff.  Other  specimens  of  the 
genus,  but  evidently  not  of  this  species,  were  taken  at  Rosarito, 
having  the  under  parts  all  pure  white,  so  the  soil  had  not  affected 
them.  In  a  letter  just  received  from  Mr.  Heller  writing  of  this 
specimen,  he  says,  "I  believe  the  under  parts  are  not  stained." 
Beside  its  peculiar  coloring,  it  seems  to  be  among  the  largest 
members  of  the  genus,  even  exceeding  in  the  general  measurements 
of  body  or  skull  baileyi,  b.  rudinoris  and  zaccatecus.  Only  the  type 
specimen  was  obtained. 


?,  buff  color. 


170  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.   III. 

ORDER   CARNIVORA. 

GENUS  SPILOGALE. 
Spilogale  arizonae  martirensis.     Subsp.  nov. 

Type  locality.  Vallecitos,  San  Pedro  Martir  mountains,  Lower 
.California,  9,000  feet  elevation. 

Gen.  char.  Similar  to  S.  arizonce  in  markings,  but  the  white 
stripes  from  occiput  and  cheeks  narrower  and  shorter,  those  from 
cheeks  reaching  only  to  just  beyond  shoulders;  broken  stripe 
from  fore  leg  across  lower  back,  broader;  tail  and  hind  foot 
shorter.  Skull  is  shorter,  narrower  and  lighter,  with  narrower 
rostrum. 

Color.  Entire  body,  legs  and  feet  jet  black,  with  white  stripes 
and  spots  as  in  S.  arizonce,  differing  only  as  mentioned  above. 
Tail  jet  black  for  basal  half,  white  for  the  remainder.  Chin  white. 
White  spot  on  forehead  large  and  broad. 

Measurements.  Total  length,  male,  395;  tail  vertebrae,  143; 
hind  foot,  44;  ear,  25.  Skull:  occipito-nasal  length,  49  (51); 
Hensel,  45.5  (50);  zygomatic  width,  33  (37);  interorbital  con- 
striction, 12  (14);  width  of  rostrum,  n  (12.5);  length  of  nasals, 
8  (8.5);  breadth  of  brain  case  over  auditory  meatus,  27  (25); 
mastoid  breadth,  30  (32);  palatal  length,  19  (19);  post-palatal 
length,  26  (29);  length  of  mandible,  angle  to  alveolus  of  incisor, 
30;  height  at  condyle,  6;  at  coronoid  process,  15.  The  figures 
in  parentheses  are  the  measurements  taken  from  the  skull  of  the 
type  of  .S.  arizonce. 

This  seems  to  be  a  valid  subspecies  of  6".  arizonce,  usually 
regarded  as  a  subspecies  of  S.  phenax,  but  which  should  probably 
occupy  a  specific  rank.  The  new  form  is  a  smaller,  possibly  a 
-  more  slender  animal  than  its  relative,  and  differs  from  it  in 
appearance  and  in  cranial  characters,  as  mentioned  above.  It 
will  be  noticed  that,  although  the  skull  of  6".  a.  martirensis  is 
smaller  generally  than  that  of  its  relative,  in  its  measurements, 
the  brain  case  is  wider  above  the  auditory  meatus. 

GENUS   PUTORIUS. 

A.        LUTREOLA. 

Putorius  vison  *melampeplus.     Subsp.  nov. 
Type  locality.      Kenai  Peninsula,  Alaska. 


,  with  dark  garments. 


APR.  1903.     NEW  SPECIES  AND  SIT.SPKCIKS  OK  MAMMALS — ELLIOT.     171 

Gen.  char.  Size  rather  large  but  smaller  than  P.  v.  ingens ; 
color  dark,  without  any  reddish  tint  so  characteristic  of  P.  v. 
energumenus.  Skull  smaller  than  P.  v.  ingens  and,  as  compared 
with  P.  v.  energumenus,  has  the  audital  bullae  flatter  and  broader 
and  a'  broader  palate  posteriorly;  pterygoid  fossa  broader  and 
relatively  shorter,  considering  the  size  of  skull.  Rostrum  wider 
and  heavier;  interorbital  constriction  greater,  as  is  also  the  width 
at  the  postorbital  processes;  interorbital  length  shorter;  palate 
wider  at  alveoli  of  incisors,  and  last  upper  molar  smaller  and 
narrower.  Well  developed  sagittal  and  occipital  crests. 

Color.  Entire  upper  parts,  legs  and  feet,  dark  chocolate 
without  any  red  tints;  under  parts  slightly  paler  with  a  white  spot 
on  chin,  and  in  some  specimens  a  small  one  on  chest;  tail  bushy, 
blackish,  slightly  paler  at  base. 

Measurements.  Total  length,  710;  tail,  180;  hind  foot,  65 
(skin).  Skull:  occipito-nasal  length,  59;  Hensel,  60;  zygomatic 
width,  40;  interorbital  constriction,  10;  mastoid  width,  32;  width 
of  brain  case,  30;  palatal  length,  28;  length  of  bullae,  15;  breadth 
of  rostrum,  15;  length  of  nasals  about  9  (bones  of  rostrum 
ankylosed);  width  at  postorbital  processes,  18;  from  postorbital 
process  to  anterior  margin  of  frontals,  18  (diagonally);  mandible 
from  angle  to  alveolus  of  incisor,  35;  height  at  angle,  6;  at 
coronoid  process,  19. 

This  is  a  very  dark  mink,  easily  distinguished  from  P.  v. 
energuminus  in  color  by  the  total  absence  of  any  red  tint,  and  by 
the  various  cranial  differences  stated  above.  In  color  it  resem- 
bles more  nearly  examples  of  P.  vison  from  eastern  North  Amer- 
ica, but  is  larger  than  that  species,  though  possibly  specimens 
of  P.  v.  lutreocephalus  from  the  Atlantic  coast  might  equal  it  in 
size.  From  P.  v.  ingens  it  differs  in  being  smaller  (the  skull 
described,  though  that  of  an  old  male,  being  much  less  in  all  its 
measurements),  and  also  in  its  very  dark  coloring,  P.  r.  ingens 
being  a  pale  form.  Several  specimens  were  received  from  the  type 
locality,  all  about  alike  in  color;  if  any  difference  was  perceptible 
it  was  that  some  were  even  darker  than  the  type.  Mr.  Bangs 
kindly  compared  my  specimens  with  his  series  of  P.  v.  energu- 
minus, and  his  conclusions  were  in  accord  with  mine  expressed 
above.  His  examples  were  in  both  worn  and  full  pelage,  while 
the  P.  v.  enfrguminus  in  the  collection  of  this  Institution  are  not 
in  full  coat,  having  been  taken  on  the  3Oth  September.  The 
Kenai  specimens  are  in  full  winter  pelage. 


172  FIELD  COLUMBIAN  MUSEUM — ZOOLOGY,  VOL.   III. 


ORDER    INSECTIVORA. 

GENUS  SOREX. 
Sorex  *oreinus.     Sp.  nov. 

Type  locality.  Aguaje  de  las  Fresas,  San  Pedro  Martir  moun- 
tains, Lower  California,  Mexico,  6,000  feet  elevation. 

Gen.  char.      Similar  to  S.  vagrans,  but  darker  and  without  any 
of  the  russet  coloring  of  that  species,  and  darker  on  under  parts. 
Skull  has  the  rostrum  shorter,    the   brain  case  flatter,   occipital 
w     region  lower  and  teeth  smaller. 

Color.  Upper  parts  sepia,  beneath  dark  gray  (in  one  speci- 
men blackish);  hands  and  feet  whitish;  ears  sepia. 

Measurements.  Type:  total  length,  103;  tail  vertebrae,  43; 
hind  foot,  12;  ear,  6.  Extremes  of  four  specimens:  total  length, 
103-110;  tail  vertebrae,  37-43;  hind  foot,  11.5-12;  ear,  6-8.5. 
Skull:  occipito-nasal  length,  15  (16);  Hensel,  14  (14.5);  inter- 
orbital  constriction,  3  (3);  length  of  rostrum,  9.5  (10.2);  palatal 
length,  6  (7). 

This  shrew  while  nearly  allied  to  S.  vagrans  has  sufficient 
differences  to  separate  it  from  that  species,  which  belongs  to  the 
northwestern  coast  region  and  British  Columbia.  It  is  a  much 
darker  animal  than  vagrans,  but  about  the  same  size,  with  a 
smaller  skull  and  smaller  teeth.  The  skull  measurements  in 
parentheses  are  those  of  S.  vagrans. 


ORDER  CHIROPTERA. 

GENUS    MYOTIS. 
Myotis  milleri.     Sp.  nov. 

Type  locality.  La  Grulla,  San  Pedro  Martir  mountains,  Lower 
California,  Mexico,  8,000  feet  elevation. 

Gen.  char.  Fur  long;  calcar  like  that  of  M.  evotis,  of  which 
species  this  one  is  an  ally;  ears  very  large,  reaching  beyond  end 
of  nose  and  rather  pointed  at  tip;  wings  from  base  of  foot;  color 
very  pale.  Skull:  forehead  rising  gradually  from  rostrum;  occi- 
put rounded;  rostrum  broad;  no  occipital  crest. 

Color.  Upper  parts  broccoli  brown  with  a  tinge  of  russet; 
under  parts  whitish  or  creamy  white,  the  base  of  all  the  hairs  on 
the  body  being  blackish,  and  this  hue  is  conspicuously  shown 

,  mountaineer. 


APR.  1903.     NEW  SPECIES  AND  SUBSPECIES  OP  MAMMALS — ELLIOT.      173 

amid. the  fur;  ears  black  with  an  indication  of  a  purple  shade; 
sides  of  face  pale  brown;  wing  and  interfemoral  membranes  pur- 
plish brown;  feet  black. 

Measurements.  Total  length,  87;  tail  vertebrae,  40;  tibia,  21; 
foot,  8.5  (coll.  meas.);  ear,  length  from  meatus,  19;  width  of  ear, 
10.5;  tragus,  9  (dried  skin);  fore  arm?  (heads  of  both  fore  arms 
gone);  thumb,  5.2;  longest  ringer,  ist  phalanx,  27;  2d  phalanx, 
9;  3d  phalanx,  10;  4th  phalanx,  6.  Skull:  occipito-nasal  length, 
13;  Hensel,  n;  zygomatic  width,  8;  interorbital  constriction,  4; 
width  of  rostrum,  5;  width  of  brain  case,  6.5;  palatal  length,  5; 
length  of  upper  tooth  row,  alveolar  border,  4. 

I  have  much  pleasure  in  giving  to  this  very  distinct  species 
the  name  of  my  friend,  Mr.  G.  S.  Miller,  Jr.,  Assistant  Curator 
of  the  Department  of  Mammals  in  the  National  Museum,  who  is 
our  greatest  authority  on  the  Chiroptera. 

From  M.  evotis,  to  which  it  is  probably  nearest  allied,  it  is 
at  once  distinguishable  by  its  different  coloration  and  larger  ears. 
This  bat  seems  to  have  been  scarce,  for  Mr.  Heller  only  secured 
two  specimens,  both  at  La  Grulla. 


I****  *v ; 


V  V 


r*'.v 


UNIVERSITY  OF  ILLINOIS-URBANA 

590. 5FI  C001 

FIELDIANA,  ZOOLOGY$CHGO 
31900-04 


301 


2  009379600 


